JPH055985B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a frame scaffold that is temporarily installed along the outer wall surface of a building, etc., and particularly relates to a frame scaffold that can be dismantled rationally, safely and easily. [Prior Art] As this type of framework scaffold, the one shown in FIG. 7 is currently in general use. That is, in the figure, a plurality of torii-shaped building frames 90 are arranged side by side at predetermined intervals, and the required number are connected in the vertical direction, and intersecting braces 91 are installed between adjacent building frames. It will be done. And the horizontal land 90a, 90 of the adjacent building frame
Scaffolding board 2 is spanned between a and work floors A ₁ and A ₂
... will be ensured. Supports 92 are installed on the top building frame 90.
is erected and the handrail 93 is set. [Problems to be Solved by the Invention] However, the above-mentioned known framework scaffolds have the following problems. During assembly or disassembly (reassembly), workers standing on the scaffolding boards 2 at each stage are not provided with handrails to ensure their safety, and are forced to perform extremely dangerous work. Frame scaffolding usually has a curing frame (framed metal mesh) or curing net (mesh sheet) stretched on its outer surface for the purpose of curing fallen objects. Such curing is carried out after all stages of scaffolding have been erected, but in reality there is a risk of accidents caused by falling objects even during erecting, and it cannot be said to be a sufficient measure. Furthermore, both the curing frame and the net are troublesome to install and require considerable effort. Nets are generally 5100mm long and are designed to cover three levels of the building frame with one piece, but attaching to the building frame is a hassle as it requires tying it to the building site with a string. It is. The curing frame has a structure in which curing clamps are attached to two places, the building frame and the building site, and the holes in the curing frame are fitted into the joints provided on these clamps, which requires time-consuming work to install. becomes. Furthermore, if the net is not securely fixed to the building site, it will flap around in the wind and become a source of noise. Furthermore, even if only one part is damaged, the entire large piece needs to be replaced, which is not only disadvantageous in terms of cost, but the large size of each piece also makes it difficult to handle when installing, removing, storing, cleaning, etc. I have to. The present invention aims to provide a framework scaffold that solves the problems of the conventional scaffolds described above. [Means for Solving the Problems] As shown in FIG. 1, the framework scaffolding of the present invention consists of a pair of building lots 10, 10, in which H-shaped building frames 1 are arranged in parallel, with a horizontal lot 11 arranged between approximately the middle part of the pair of building lots 10, 10. The scaffolding boards 2 are placed between the adjacent horizontal lots 11, 11 of each tier, while the scaffolding boards 2 are spanned between the adjacent building lots 10, 10 on the outside and inside sides of each tier. The side frame is installed. The outer side frame 3 attached to the upper and lower sides of the scaffold board 2 level has a rectangular and rigid side frame main body 30, as shown in detail in FIGS. 3 and 4. The side frame body 3 is also square shaped.
0 and a net 31 of approximately the same size, the side frame main body 30 has an outer width _W2 dimension that substantially matches the inner width W dimension between the adjacent building lots 10, 10,
Connecting pieces 30 attached near the four corners of the side frame body 30
2, the net 31 is supported in a state that it fits between the adjacent building lots 10, 10 without a gap, and the net 31 is attached to and detached from the side frame body 30 by means of engagement means 32 attached to the side frame body 30. Possibly installed. [Function] In the framework scaffold of the present invention, the side frame 3 provided with the net 31 is built over the entire outer surface of the scaffold. This side frame 3 provides the scaffold with strength against horizontal forces by its own frame rigidity, that is, it has the function of replacing braces. In this case, the net 31 closes the entire surface of the opening on the outer side of the scaffold and functions to protect against falling objects. The side frame 3 is attached to fit completely between the adjacent building lots 10, 10, and since the side frame body 30 has an outer width _W2 that approximately matches the inner width W between the adjacent building lots, This, together with the provision of the net 31, ensures that there is no gap between the two and achieves reliable curing. In addition, the side frames 3 are set for each tier in parallel with the assembling of the building frame 1 when the scaffolding is being erected, and this makes it possible to protect fallen objects even when the scaffolding is being erected. Moreover, the implementation of falling object protection measures is completed at the same time as the scaffolding is erected, so there is no need to carry out protection measures as a separate task after the scaffolding is erected, unlike with conventional curing nets. The required effort and time can be saved. Not only that, but the frame 3 itself becomes a handrail, and H
In connection with the use of the form building frame 1, the safety of workers is also ensured during the process of demolishing the scaffolding. Furthermore, since each net 31 is small in size, it does not flap or make noise unlike a curing net, and is configured to be removable from the side frame body 30, making it easy to clean. All you have to do is remove it from the main body 30. Furthermore, during transportation, storage, etc., it can be handled while attached to the main body of the side frame, and is not bulky and easy to handle. [Embodiment] FIG. 1 above shows an embodiment of the present invention. This scaffold as a whole has a multi-tiered work floor A ₁ ,
It consists of a working floor unit U ₁ forming A ₂ . The basic components of the work floor unit _U1 are a building frame 1, a scaffold board 2, a side frame 3 on the outside side, and a side frame on the inside side (frame side). First, each configuration will be explained element by element. ○Building frame 1 Figure 2 shows the front view. According to the figure, the building frame 1 is an H-shaped frame, and includes a pair of building lots 10, 10, a horizontal lot 11 that connects the two building lots at the upper and lower division points, and a horizontal lot 11 on the lower side of the horizontal lot 11, Inverted U-shaped reinforcing material 12 placed between the bases 10 and 10
The basic parts are made up of. All structural members are round steel tubes. A connecting pin 13 for connecting the building frames to each other is attached to the upper ends of both building sites 10, 10. Furthermore, on each of the building lots 10, 10, engagement pins 15 with spring-type retaining pieces 150 are provided at a total of four locations near the upper and lower ends, directly above and directly below the mounting position of the horizontal lot 11. . The arm lock and the engagement pin 15 for locking the side frame are all shaped to protrude into the interior of the frame itself. A through hole 100 extending in the longitudinal direction of the horizontal lot is provided in a portion of each building site 10 directly below the attachment position of the horizontal lot 11. This through hole 1
00 is used when installing scaffolding equipment such as morning glory. The reinforcing material 12 spanning both building lots 10, 10 is
It is connected to the horizontal floor 11 by a connecting plate 120 at its center. Connection plate 1
A through hole 120a is drilled in the through hole 120, which can be used when attaching a tie rod for support and reinforcement when attaching a morning glory or the like using the through hole 100. Furthermore, if the temporary construction is intended for buildings in general, a frame width of less than 900 mm, which is the ``simple frame'' width, is sufficient. Regarding the height _H1 , from the standpoint of securing the necessary space for work based on the height of the person, 1700
~2000mm is appropriate. ○Scaffolding board 2 The scaffolding board 2 is normally used, and is provided with engagement claws 20, 20 for engaging the building frame horizontal area 11 at both ends. ○Side frame 3 Its structure is shown in Figures 3 and 4. The side frame 3 in FIG. 3 is rectangular in its entirety as shown in FIG. 3, and consists of a side frame main body 30 and a net 31. The side frame main body 30 is made of a round pipe that goes around the circumference, and includes a reinforcing member 301 arranged inside the side frame main body 30, and connecting pieces 302 provided near the four corners of the side frame main body 30. As described above, the side frame main body 30 is constituted by a round pipe, and on its inner surface, engaging means 32 for attaching the net 31 are provided. The engaging means 32 shown enlarged in FIG. , so that the hook portion does not protrude outward from the outer circumferential surface of the side frame main body 30 by fitting the periphery thereof. Each of the engaging means 32 is formed inside the frame itself so as to be bent toward the outer periphery. The dimensions of the side frame body 30 are such that the outer width W ₂ approximately matches the inner dimension W between the adjacent building lots (hereinafter simply referred to as adjacent building lots) 10, 10 of the building frames 1 that are arranged in parallel as described below. ing. Height H ₂ is the height H ₁ of building lot 10
It is exactly half the size of the original. The reinforcing material 301 forms a water-like shape within the side frame body 30 and provides high rigidity to the side frame body 30. Needless to say, the method of taking the reinforcing material 301 is not limited to this, and various modifications are possible. Some of the variations are shown in Figure 5. The connecting pieces 302 are provided near the upper and lower ends of both vertical members of the side frame main body 30. This connecting piece 302
As a result, the side frame main body 30 is attached so as to fit between the adjacent buildings 10, 10. The net 31 is a peripheral portion 311 that is finished with a cloth.
A string is passed through a hole 311b drilled in a and fixed to the frame 310. Other methods of attaching the net 311 include passing a string through the hole 311b and attaching it to the side frame body 30, and fixing the net 31 to a rectangular frame and then attaching this frame to the side frame body 30. It is possible. In the side frame 3 shown in FIG. 4, the side frame main body 30 is made of angle material, and on the inner surface of the vertical flange of the angle material,
Engaging means 32 for attaching the net 31 are provided. As for the engaging means 32..., similar to the side frame 3 in Fig. 3, a hook is separately attached to the side frame main body 30 (Fig. (C) in the same figure is possible. According to this side frame 3, the net 31 is housed in a space surrounded by the vertical flange portion of the angle member constituting the side frame body 30 and the flat flange portion bent from the vertical flange portion toward the inside of the frame. The net 31 may be attached directly to the engaging means 32, or the net 31 may be temporarily fixed to a rectangular frame, and this frame may be attached to the side frame body 30. The other configurations are the same as the side frame 3 in FIG. 3, so detailed explanation will be omitted. ○ Side frame on the inner side (body side) This is generally used as a handrail and strength member, such as a handrail frame 35 as shown in Figure 6A, or a handrail material 36 as shown in Figure 6B. A combination of the diagonal member 37 and the diagonal member 37 is used. Although the configuration of each element is as described above, the arrangement and combination of these elements will be explained next. First, the required number of building frames 1 are arranged in parallel at a predetermined interval l, and the required number of stages are added in the vertical direction as well. A jack base 8 is attached to the bottom end of the lowest building frame. The placement interval l is 1829mm, 1524mm for inch size,
It will be set at around 1219mm and 914mm. The connection in the vertical direction is performed by the above-mentioned connection pin 13 at the upper end of the building site 10, and the locking is performed by an arm lock or the like. Scaffolding boards 2 are connected and spanned between adjacent horizontal lots 11, 11 of each tier of such a building frame 1, forming working floors _A1 , _A2 ... for the number of erected tiers of the building frame. ing. The engagement with the horizontal ground 11 is done using the engagement pieces 2 on both ends of the scaffolding board 2.
According to 0.20. The side frame 3 is provided between each adjacent building site 10, 10 on the outer surface side in each stage of the building frames 1. The height H ₂ of the side frame 3 is approximately half the height H ₁ of one building frame, and the side frame 3 has one frame above and below the work floor A level at each level. It's included. Although a portion is omitted in FIG. 1 for convenience of illustration, the side frame 3 is provided so as to cover the entire outer surface. The side frame 3 is fixed using the four connecting pieces 302 of the side frame...
is fitted into the engagement pins 15 with retaining pieces of the building lots 10, 10. In the above-mentioned attached state, each side frame 3 is fitted into and built between the buildings 10, 10 on both sides, and there is almost no gap between the side frames 3 and each of the buildings. Although the side frames on the inner side (framework side) are not shown in Figure 1, their height is approximately half of the height _H1 of one building frame, and 1 for each level of building frame 1... The unit is built above the work floor A level. In the illustrated example, a diagonal member 5 is attached to the lower side of the lowermost work floor _A1 instead of the side frame. In the scaffold constructed as described above, the side frames 3 placed on each tier of the work floor unit U ₁ function to horizontally solidify its own tier, and as a result, the whole becomes solid. Moreover, each side frame 3 fits between the adjacent building lots 10, 10, and substantially does not create a gap between each of the building lots 10, 10. Therefore, the nets 31 provided on the side frames ensure that fallen objects are protected. Next, the scaffolding is removed as follows. First, the lowest building frame 1 of work floor unit U ₁ ...
are installed, diagonal members 5 are set on the lower side between each building frame, and scaffolding boards 2 are stretched between adjacent horizontal lots 11, 11. After doing this, the unit
Go up onto the scaffolding board 2 of _U1 and attach the outer side frame 3 and the inner side frame on the lowermost side. Once the bottom tier is completed in this way, the building frame 1 of the second tier is added on top of it, the lower side frame 3 of the second tier is attached, and the scaffold board 2 is hung. In this manner, the work unit _U1 is assembled step by step in parallel from the bottom. When dismantling, follow the exact opposite procedure and work your way down from the top. In such assembly and disassembly work, the worker stands on the scaffolding board 2 for each tier and attaches the upper outer side frame 3 and the inner side frame 3 to the tiered building frame 1 and then directly. The process proceeds by adding the upper building frame 1 → installing the lower outer side frame 3 and the scaffolding board 2 to the building frame 1 in this order, but in this case, the subsequent work is always performed on the step being worked on. The work will be carried out with side frames on both the outside and inside sides, allowing for safe work. [Effects of the Invention] The framework scaffold of the present invention described above has the following features and advantages. ○ The side frame 3 on the outer surface side incorporated into the scaffold resists horizontal force due to its frame rigidity, and the entire scaffold has high strength. ○ The side frame 3 is also built so that it fits between the adjacent buildings 10 and 10 without any gaps, and the net 31 provided thereon covers the entire outer surface of the scaffold without any gaps, ensuring the protection of fallen objects. It turns out. ○ And since the side frames 3 are set step by step in parallel with the erection of the building frame when the scaffolding is being erected, they function effectively as a countermeasure against falling objects during the scaffolding erecting process. In addition, it is reasonable to complete measures to prevent falling objects from occurring as soon as the scaffolding is erected, and the time and effort required for temporary scaffolding can be greatly reduced. ○ Furthermore, in connection with the adoption of H-shaped building frame 1, side frame 3
This is an effective means to protect the safety of workers when assembling scaffolding. In addition, since each net 31 is small in size, it does not flap or make noise unlike conventional curing nets. Moreover, it is configured to be detachable from the side frame main body 30, so cleaning can be done easily by removing it from the main body 30, and when transporting or storing it, it can be handled while attached to the main body 30, which reduces the bulk. It becomes easy to handle without falling apart.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a framework scaffolding according to an embodiment of the present invention, Fig. 2 is a front view showing a building frame used in the above-mentioned framework scaffolding, and Figs. An exploded perspective view showing the side frame of , both figures B and C are partial detailed views of the side frame, and Fig. 5 is a schematic diagram showing variations in how to take the reinforcing material for the same side frame.
6A and 6B are front views showing the side frame on the inner side, and FIG. 7 is a schematic explanatory view showing a conventional framework scaffold. In the diagram, 1...building frame, 2...scaffolding board, 3...side frame.

Claims (1)

[Claims] 1 H-shaped building frames 1 with a horizontal lot 11 arranged between approximately the middle part of a pair of building lots 10, 10 are arranged in parallel and assembled into multiple tiers, and each tier has an adjacent horizontal lot 11,
Scaffolding board 2 is spanned between 11, while side frames are installed between adjacent buildings 10 and 10 on the outside and inside sides of each tier, and are installed on the upper and lower sides of the scaffolding board 2 level. The side frame 3 on the outer surface side consists of a combination of a side frame main body 30 having a rectangular shape and having rigidity, and a net 31 which is also rectangular and has approximately the same size as the side frame main body 30. Outer width that approximately matches the inner W dimension between bases 10 and 10
The adjacent building ₁ is connected to the adjacent building 1 by the connecting pieces 302 attached near the four corners of the side frame body 30.
The net 31 is supported so that it fits between 0 and 10 without a gap, and the net 31 is attached to the side frame main body 30.
A frame scaffolding characterized in that it is removably attached to a side frame body 30 by means of engagement means 32 with.